package org.liquibase.maven.plugins;

 import liquibase.Liquibase;

 import liquibase.exception.LiquibaseException;

 import org.apache.maven.plugin.MojoFailureException;

 /**

  * Writes a Liquibase tag to the database.

  * 

  * @author Peter Murray

  * @goal tag

  */

 public class LiquibaseTag extends AbstractLiquibaseMojo {

     /**

      * @parameter expression="${liquibase.tag}"

      * @required

      */

     private String tag;

     @Override

     protected void checkRequiredParametersAreSpecified() throws MojoFailureException {

         super.checkRequiredParametersAreSpecified();

         if (tag == null || tag.trim().length() == 0) {

             throw new MojoFailureException("The tag must be specified.");

         }

     }

     @Override

     protected void printSettings(String indent) {

         super.printSettings(indent);

         getLog().info(indent + "tag: " + tag);

     }

     @Override

     protected void performLiquibaseTask(Liquibase liquibase) throws LiquibaseException {

         liquibase.tag(tag);

     }

 }